{"product_id":"m-works-mw-r21m6-osspeed-r21-m6-marine-engine","title":"O.S.Speed R21-M6 Marine Engine M-Works","description":"\u003cstrong\u003eProduct Info:\u003cbr\u003e\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eO.S.SPEED R21-M6 M-Works Marine Racing 3.5cc Engine\u003c\/strong\u003e\u003cbr\u003e\u003cbr\u003e\u003cimg src=\"\/dokument\/bibliotek\/Image\/MC2\/Loggor\/R21-M6-logo-1000px.png\" width=\"560\" height=\"192\" alt=\"\"\u003e\u003cbr\u003e\u003cbr\u003eThis is the new 2026-edition Minicars Works O.S.SPEED R21-M6 3.5cc long-stroke competition engine.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003cbr\u003e\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eNEW 2026: two water cooling heads are included - std volume + a new M-Works head with larger volume!\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003eDLC coated \u0026amp; balanced R21 Euro-II crankshaft with more timing\u003c\/li\u003e\n\u003cli\u003e9-port cylinder liner with 3-port exhaust\u003c\/li\u003e\n\u003cli\u003ePiston with 3 oil-grooves\u003c\/li\u003e\n\u003cli\u003eCeramic main ball bearing\u003c\/li\u003e\n\u003cli\u003eReinforced \"R\" conrod\u003c\/li\u003e\n\u003cli\u003eBackplate with steel thrust plate for lower friction and increased durability\u003c\/li\u003e\n\u003cli\u003eNo carb included - choose your own carburetor (15mm diameter neck)\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003e\u003cstrong\u003eSuitable for competition boats (experience level ”high”):\u003c\/strong\u003e\u003cbr\u003e\u003cul\u003e\n\u003cli\u003eOffshore (with gear deduction)\u003c\/li\u003e\n\u003cli\u003eEndurance (with gear reduction)\u003c\/li\u003e\n\u003cli\u003e\u003cem\u003eThe R21-M6 is not recommended for Hydroplanes with direct drive as its too peaky for that application and the extra possible power is not needed.\u003c\/em\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003cstrong\u003e\u003cbr\u003eRecommended fuel:\u003c\/strong\u003e\u003cbr\u003e\u003cul\u003e\n\u003cli\u003e12% nitro fuel with 8% Klotz Benol oil (Recin) + 4% Klotz Original Techniplate (Synthetic)\u003c\/li\u003e\n\u003cli\u003e\u003cem\u003eWe don't recommend running the engine with less oil than the above recommended levels. You may add more recin\/castor oil (Klotz Benol) in extreme conditions and heavy loads.\u003c\/em\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003e\u003cstrong\u003ePerformance R21-M6 vs R21-M5:\u003c\/strong\u003e\u003cbr\u003e\u003cul\u003e\n\u003cli\u003eThe R21-M6 has even higher timing numbers in the crankshaft and piston liner.\u003c\/li\u003e\n\u003cli\u003eThe R21-M6 has more peak power but a narrower power-band.\u003c\/li\u003e\n\u003cli\u003eThe R21-M6 is the highest performance out-of-the box engine for gear-reduction applications.\u003c\/li\u003e\n\u003cli\u003eThe R21-M5 is easier to set-up as it's less peaky and have more torque vs the R21-M6.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003e\u003cimg src=\"\/bilder\/artiklar\/zoom\/OS1EY00_9.jpg\" width=\"450\" height=\"474\" alt=\"\"\u003e\u003cbr\u003e9-port sleeve with re-designed ports with improved flow for more peak power and a piston with 3 oil grooves.\u003cbr\u003e\u003cbr\u003e\u003cimg src=\"\/bilder\/artiklar\/zoom\/OS1EY00_10.jpg\" width=\"450\" height=\"450\" alt=\"\"\u003e\u003cbr\u003eReinforced \"R\" connecting rod is stronger to withstand even more abuse.\u003cbr\u003e\u003cbr\u003e\u003cimg src=\"\/bilder\/artiklar\/zoom\/OS1EY00_12.jpg\" width=\"450\" height=\"450\" alt=\"\"\u003e\u003cbr\u003eThe rear bearing is ceramic.\u003cbr\u003e\u003cbr\u003e\u003cimg src=\"\/bilder\/artiklar\/zoom\/OS1EY00_8.jpg\" width=\"450\" height=\"347\" alt=\"\"\u003e\u003cbr\u003eDLC coated and balanced crankshaft from the R21 Euro II engine for more power overall.\u003cbr\u003e\u003cbr\u003e\u003cimg src=\"\/bilder\/artiklar\/zoom\/OS0R21M05_10.jpg\" width=\"560\" height=\"510\" alt=\"\"\u003e\u003cbr\u003eSteel insert backplate for less friction and more durability.\u003cbr\u003e\u003cbr\u003e\u003cimg src=\"\/dokument\/bibliotek\/Image\/MC2\/Bilder\/R21-M6-heads-cooling-graphics.jpg\" width=\"560\" height=\"560\" alt=\"\"\u003e\u003cbr\u003eTwo cooling heads are included - normal volume + a new M-Works head with larger volume!\u003cbr\u003e\u003cbr\u003e\u003cimg src=\"\/bilder\/artiklar\/zoom\/OS0R21M05-24_13.jpg\" width=\"560\" height=\"560\" alt=\"\"\u003e\u003cbr\u003e\u003cbr\u003eCombustion chamber with smaller volume for lower nitro levels.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eSpecs:\u003c\/strong\u003e\u003cbr\u003e\u003cul\u003e\n\u003cli\u003eDisplacement: 3.49cc\u003c\/li\u003e\n\u003cli\u003eBore: 16.08mm\u003c\/li\u003e\n\u003cli\u003eStroke: 17.2mm\u003c\/li\u003e\n\u003cli\u003eCrankshaft dia: 14mm\u003c\/li\u003e\n\u003cli\u003ePractical r.p.m. Range: 4.000～43.000\u003c\/li\u003e\n\u003cli\u003eOutput: 2.76hp @ 35.000r.p.m.\u003c\/li\u003e\n\u003cli\u003eWeight: 254g\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003e\u003cstrong\u003eIncluded:\u003c\/strong\u003e\u003cbr\u003e\u003cul\u003e\n\u003cli\u003eO.S.Speed R21-M6 Minicars Works Marine Engine\u003c\/li\u003e\n\u003cli\u003eRP6 Glowplug\u003c\/li\u003e\n\u003cli\u003eO.S.Speed flywheel cone\u003c\/li\u003e\n\u003cli\u003eO.S.Speed decal\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003e\u003cimg src=\"\/dokument\/bibliotek\/Image\/MC2\/Loggor\/Minicars-Works-1000px.png\" width=\"560\" height=\"202\" alt=\"\"\u003e","brand":"M-WORKS","offers":[{"title":"Default Title","offer_id":43930746224718,"sku":"MW-R21M6","price":2935.0,"currency_code":"DKK","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0610\/9672\/2510\/files\/MW-R21M6_S.jpg?v=1783291417","url":"https:\/\/fjernstyret.dk\/products\/m-works-mw-r21m6-osspeed-r21-m6-marine-engine","provider":"FjernstyretDK","version":"1.0","type":"link"}